WO1999040355A1 - Tuyaux pour fluide a contention par emboitement et cordon - Google Patents

Tuyaux pour fluide a contention par emboitement et cordon Download PDF

Info

Publication number
WO1999040355A1
WO1999040355A1 PCT/US1999/002475 US9902475W WO9940355A1 WO 1999040355 A1 WO1999040355 A1 WO 1999040355A1 US 9902475 W US9902475 W US 9902475W WO 9940355 A1 WO9940355 A1 WO 9940355A1
Authority
WO
WIPO (PCT)
Prior art keywords
pipe
bell
annular recess
connection
fluid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US1999/002475
Other languages
English (en)
Inventor
Kermit W. Janssen
James Wuertz
Bruce K. Thiessen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Certainteed LLC
Original Assignee
Certainteed LLC
Certain Teed Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Certainteed LLC, Certain Teed Corp filed Critical Certainteed LLC
Priority to AU27607/99A priority Critical patent/AU2760799A/en
Publication of WO1999040355A1 publication Critical patent/WO1999040355A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
    • F16L37/12—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members using hooks, pawls, or other movable or insertable locking members
    • F16L37/14—Joints secured by inserting between mating surfaces an element, e.g. a piece of wire, a pin, a chain
    • F16L37/142—Joints secured by inserting between mating surfaces an element, e.g. a piece of wire, a pin, a chain where the securing element is inserted tangentially
    • F16L37/148—Joints secured by inserting between mating surfaces an element, e.g. a piece of wire, a pin, a chain where the securing element is inserted tangentially the securing element being flexible

Definitions

  • This invention relates to devices for joining pipes together, and more particularly, to the joining of fluid transport piping including bell and spigot pipe portions.
  • Pipe junction restrainers and techniques for their assembly have been developed to make fluid-tight connections between two axially-aligned pipes, joints, valves, fittings, hydrants, or other types of fluid connections. Often, these junction restrainers must withstand extraordinarily great pressures and tensile loads associated with water distribution and sewer connections.
  • PNC polyvinyl chloride
  • Solvent cement joints while popular, release volatile gas and vapors which are unhealthy to workers and the environment.
  • Glued joints also required substantial destruction of the coupling and piping in order to disassemble.
  • Threaded joints have been widely used on smaller pipe diameters in bell and spigot and same-diameter coupling designs. While threaded joints are reversible, the task is usually time consuming and increases labor costs, especially if a PTFE tape is used. Pipe-thread type joints are also easily distorted and damaged during pipe installation.
  • Newer systems have included a spline as a restraining device.
  • One popular system employed for connecting PNC pipe sold under the trademark CERTA-LOKTM and produced by CertainTeed Corporation, Valley Forge, Pennsylvania, provides a restrained joint between a pair of pipe sections for municipal, fire protection, mining, irrigation, well casings, and other industrial uses.
  • the joint connector uses a pair of o-ring seals and internal annular cavities that are filled externally with polymeric splines after two sections of PVC pipe are inserted into a tubular connector. These splines fill a pair of annular cavities located on the pipe sections to form a restraining mechanical lock that has a rating of about 150 psi and up.
  • spline connections In addition to spline restraints in pipe connections using pipes of similar diameters, spline connections have been used in bell and spigot designs with gland connections for attaching pipes to valves and fittings of dissimilar materials, such as the connection disclosed in Himmelberger, U.S. Patent No. 5,509,699. Additionally, straight dowels have been used to connect bell and spigot-type thermoplastic piping systems, which additionally rely on cast resins for fixing the joint to prevent rotation. See W. Schwarz, U.S. Patent No. 3,606,401. While various connection systems are available for providing fluid-tight seals to pipes manufactured with various materials, there remains a need to greater simplify the process of making reversible fluid connections to minimize labor costs and provide quick disconnect capability.
  • the present invention provides a bell and spigot-type pipe connection for making a fluid connection between first and second pipes.
  • This connection includes a first pipe having a first end, including a generally bell-shaped inner surface including a first annular recess, and a second pipe having a second end sized to fit within a cavity defined by said generally bell-shaped inner surface of the first pipe.
  • the second pipe includes a second annular recess which can be aligned with the first annular recess of the bell-shaped inner surface to provide an annular cavity.
  • the connection further includes an access hole disposed through a sidewall of the first end of the first pipe and a flexible spline disposed through this access hole and into the annular cavity for providing reversible restraint to the connection.
  • an elastomeric fluid gasket is disposed between the bell-shaped inner surface and an outer surface of the second pipe, distally along said second pipe from said annular cavity, to provide a fluid-tight seal.
  • the bell and spigot connections of this invention are light weight and easy to handle, corrosion-resistant and easily reversible. Since no solvent cements are required, these connections are environmentally friendly and the connection joint achieves full strength immediately in all weather conditions.
  • the bell and spigot-type connections of this invention require no separate flanges, sleeves or tubular couplings. This greatly reduces assembly time since only one spline is needed to install the joint.
  • the overall joining area is generally shorter than in conventional CERTA-LOKTM type joints, and more reliable. It is also easier to pull or push into predrilled holes.
  • a method of joining piping in which a bell and spigot-type joint is constructed using a single spline deposed in an annular cavity formed between an inner surface of a bell-portion of a first pipe and an outer surface of a second pipe inserted into the bell-portion.
  • FIG. 1 is a front partial, cross-sectional view of a bell and spigot pipe connection of this invention
  • FIG. 2 is a front partial, cross-sectional perspective view of the pipe connection of FIG. 1;
  • FIG. 3 is an enlarged cross-sectonal view of a preferred spline and annular cavity restraining device of the pipe connection of this invention;
  • FIG. 4 is an enlarged cross-sectional view of a preferred elastomeric fluid gasket disposed in an annular groove along the bell-shaped inner surface of the first pipe;
  • FIG. 5 is a front, partial cross-sectional perspective view of another pipe connection of this invention.
  • FIG. 6 is an enlarged cross-sectional view of a preferred spline and annular cavity restraining device of the alternative pipe connection of FIG. 5;
  • FIG. 7 is an enlarged cross-sectional view of a preferred elastomeric fluid gasket disposed in an annular grove along the bell-shaped inner surface of the alternative pipe connection of FIG. 5.
  • This invention provides mechanical joints, such as those used between piping materials, including pipes, valves, various pipe fittings, hydrants, and miscellaneous connections and piping systems, including sewer systems, water distribution systems, electrical conduits for telecommunication and electrical cables, and the like, horizontal line service, such as, mining and chemical transport piping, and vertical line service, such as, well pipes and well casings.
  • pipe includes all of the above connections and those that are consistent with the principles of this invention.
  • This pipe connection 100 includes a first pipe 10, preferably made of thermosetting or thermoplastic resin, with or without fillers, additives and reinforcing agents, such as glass fibers.
  • the first pipe is made from extruded, polyvinyl-chloride, polyethelyne or ABS, polypropylene, fluropolymer plastics.
  • the first pipe includes a first end having a generally bell-shaped portion 15 including a generally bell-shaped surface therein.
  • the bell-shaped inner surface includes a first annular recess 22.
  • bell and “bell- shaped” refer to a configuration having a tapered circular wall portion, commonly referred to as the "transition,” therein. Any reference to a classic bell shape is for convenience only, since the term “bell” is already recognized in the pipe industry as having numerous shapes and sizes, yet capable of providing a male-female coupling between fluid pipes without substantially detracting, or negatively affecting the flow of fluid therethrough. It is understood that the bell-portion 15 can be of any length, although a short length of less than about 12 inches, preferably about 2.75 inches, provides adequate strength without prohibitively increasing the cost.
  • the pipe connection 100 further includes a second pipe 20, preferably made from the same materials as the first pipe 10, having a second end sized to fit within a cavity defined by said generally bell-shaped inner surface of said first pipe 10.
  • the second pipe 20 includes a second annular recess 23 on its outer diameter which can be matched or aligned with a first annular recess 22 located on the bell-shaped inner surface to provide an annular cavity.
  • an access hole 27 is provided through a side wall in the bell-portion 15 so as to communicate with the annular cavity formed by annular recesses 22 and 23 as better described in the enlarged view of FIG. 3.
  • a flexible spline 25 is inserted through the access hole 27 and into locking engagement within the annular cavity.
  • the flexible spline 25 is desirably made from a polymeric material having a shear strength or a tensile strength that is within 10% of the shear strength or tensile strength of the pipe resin compound used in the pipes 10 and 20, and more preferably, the spline 25 has a greater shear or tensile strength.
  • resins for this application include nylon, polyester, polyurethane, polysulfone, or polyether-ether-ketone (PEEK). These differences in mechanical properties are important so as to minimize unintended failure of the pipe connection 100 due to deformation of the spline 25.
  • the spline 25 must also have equal or greater chemical resistance than that of the pipes 10 and 20.
  • the pipe connection 100 also contains at least a third annular recess located either on the bell-shaped inner surface of the first pipe 10 or on the exterior surface of the second pipe
  • annular recess 24 can form a cross-sectional cavity which is shaped so that the base of the cavity is wider than the cavity mouth as shown in FIG. 7. This permits the compressed and deformed gasket 30 to lock itself in position during insertion of pipe 20.
  • annular recesses 24 and 224 can be shaped as rectangular or square cross- sections.
  • the bell and spigot-type pipe connection 200 shown in FIG. 5 uses many of the same features as the pipe connection 100. Namely, a first pipe 210 is provided with a bell-portion 215 for receiving a second pipe 220 in a male-female nested arrangement.
  • the bell-portion is provided with a first pipe 210 for receiving a second pipe 220 in a male-female nested arrangement.
  • annular recesses 222 and 223 formed in the first and second pipes 210 and 220 respectively.
  • This feature is shown in FIG. 6.
  • pipe connection 200 reverses the location of the third annular recess 224 for retaining its gasket 230.
  • Annular recess 224 is, instead, cut into the outer surface of the second pipe 220, distally from the annular recess 223 so as to provide a fluid-tight seal when the second pipe 220 is inserted into the bell-shaped cavity of the first pipe 210.
  • a gasket member (not shown) can be inserted into the bell-shaped cavity of the first pipe 10 or 210 of the pipe connections 100 and 200 of this invention, so as to receive the first end of the second pipes 10 and 210 and form a fluid seal between the conical section of the bell-shaped cavity of the first pipe 10 or 210 and the distal end of the second pipes 20 and 220.
  • This invention also contemplates that the annular cavities formed by first and second annular groves 22 and 23 or 222 and 223, can be filled with a curable material such as an air curable or hot melt thermoplastic resin, or the like, to form a solid material in the annular cavities for restraining the joint. Of course, this is a more permanent piping solution.
  • this invention provides improved bell and spigot-type fluid connections for reducing the cost of piping systems.
  • a reduction in cost is created by the elimination of a separate flange or connecting tubular member, or the requirement of additional splines or gaskets to provide a restrained fluid-tight seal.
  • the bell and spigot-type fluid-tight connections of this invention are ideal for well casings, which generally include a pump, coaxial water distribution line and/or electric motor for powering the pump.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Branch Pipes, Bends, And The Like (AREA)

Abstract

L'invention concerne des tuyaux pour fluide à contention par emboîtement et cordon (100) : un premier tuyau (10) a une première extrémité dont la taille permet de recevoir une seconde extrémité de second tuyau (20) dans une relation mâle-femelle. Les premier et second tuyaux (10, 20) comportent des renfoncements annulaires (22, 23) qui forment une cavité annulaire lorsque le second tuyau est inséré dans la première extrémité du premier tuyau. Une cannelure flexible (25) est placée dans cette cavité annulaire pour assurer la réversibilité de la contention du raccordement par emboîtement et cordon (100). Un joint statique étanche (30) est également prévu, en position distale par rapport à la cannelure (25). Ce joint statique (30) peut être situé dans un renfoncement annulaire (24) sur la surface extérieure du second tuyau (20) ou le long de la surface interne du premier tuyau (10), ou bien encore, environ à l'extrémité distale du second tuyau de manière à assurer un joint étanche.
PCT/US1999/002475 1998-02-09 1999-02-09 Tuyaux pour fluide a contention par emboitement et cordon Ceased WO1999040355A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU27607/99A AU2760799A (en) 1998-02-09 1999-02-09 Restrained bell and spigot fluid pipe connection

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US2092798A 1998-02-09 1998-02-09
US09/020,927 1998-02-09

Publications (1)

Publication Number Publication Date
WO1999040355A1 true WO1999040355A1 (fr) 1999-08-12

Family

ID=21801329

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1999/002475 Ceased WO1999040355A1 (fr) 1998-02-09 1999-02-09 Tuyaux pour fluide a contention par emboitement et cordon

Country Status (2)

Country Link
AU (1) AU2760799A (fr)
WO (1) WO1999040355A1 (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6325424B1 (en) * 1998-01-12 2001-12-04 The Lamson & Sessions Co. Coupling assembly having enhanced axial tension strength
US6739629B2 (en) 2002-06-20 2004-05-25 The Lamson & Sessions Co. Bell and spigot joint with locking strap
US6739630B2 (en) 2002-06-12 2004-05-25 The Lamson & Sessions Co. Pipe joint and coupling
EP1471298A1 (fr) * 2003-04-25 2004-10-27 S.R. Vasse Beheer B.V. Ensemble formé d'au moins un premier tuyau et un second tuyau et /ou raccord, et procédé de fabrication d'un tuyau et/ou raccord
GB2404956A (en) * 2003-08-14 2005-02-16 Peter Hart A coupling arrangement having a removable locking member
WO2007105245A1 (fr) * 2006-03-15 2007-09-20 Pentair International Sarl Système permettant le blocage réciproque d'éléments mécaniques définissant un compartiment sous pression
WO2014105222A1 (fr) * 2012-12-31 2014-07-03 North American Specialty Products Llc Tuyau à joint affleuré
US8910979B1 (en) 2014-03-28 2014-12-16 Sidney T. Fails Pipe repair coupling
US20220268380A1 (en) * 2019-07-24 2022-08-25 Aqseptence Group, Inc. Pipe length and related methods of pipe connection
WO2024128921A1 (fr) * 2022-12-13 2024-06-20 Torsion Tool Company As Ensemble d'accouplement
WO2024228865A1 (fr) * 2023-05-02 2024-11-07 S & B Technical Products, Inc. Système de jonction de tuyau retenu par verrouillage à cannelure pour tuyau en plastique

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB753641A (en) * 1954-09-14 1956-07-25 Sarginson Brothers Ltd Means for effecting a seal along the interface of two contacting planar surfaces
FR1310712A (fr) * 1961-10-20 1962-11-30 Nord Aviation Perfectionnements aux procédés et dispositifs d'assemblage de corps tubulaires ou d'enveloppes cylindriques
US3759553A (en) * 1971-04-21 1973-09-18 Hepworth Plastics Ltd Pipe couplings
US5255945A (en) * 1991-12-02 1993-10-26 Solinst Canada Limited End-to-end jointing system for tubes and pipes

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB753641A (en) * 1954-09-14 1956-07-25 Sarginson Brothers Ltd Means for effecting a seal along the interface of two contacting planar surfaces
FR1310712A (fr) * 1961-10-20 1962-11-30 Nord Aviation Perfectionnements aux procédés et dispositifs d'assemblage de corps tubulaires ou d'enveloppes cylindriques
US3759553A (en) * 1971-04-21 1973-09-18 Hepworth Plastics Ltd Pipe couplings
US5255945A (en) * 1991-12-02 1993-10-26 Solinst Canada Limited End-to-end jointing system for tubes and pipes

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6325424B1 (en) * 1998-01-12 2001-12-04 The Lamson & Sessions Co. Coupling assembly having enhanced axial tension strength
US6739630B2 (en) 2002-06-12 2004-05-25 The Lamson & Sessions Co. Pipe joint and coupling
US6739629B2 (en) 2002-06-20 2004-05-25 The Lamson & Sessions Co. Bell and spigot joint with locking strap
EP1471298A1 (fr) * 2003-04-25 2004-10-27 S.R. Vasse Beheer B.V. Ensemble formé d'au moins un premier tuyau et un second tuyau et /ou raccord, et procédé de fabrication d'un tuyau et/ou raccord
NL1023263C2 (nl) * 2003-04-25 2004-10-27 S R Vasse Beheer B V Samenstel van ten minste een eerste en een tweede buis en/of hulpstuk, alsmede een werkwijze voor het vervaardigen van een buis en/of hulpstuk.
GB2404956A (en) * 2003-08-14 2005-02-16 Peter Hart A coupling arrangement having a removable locking member
WO2007105245A1 (fr) * 2006-03-15 2007-09-20 Pentair International Sarl Système permettant le blocage réciproque d'éléments mécaniques définissant un compartiment sous pression
US8246083B2 (en) 2006-03-15 2012-08-21 Pentair International SÁRL System for reciprocally blocking mechanical elements defining a pressurized compartment
WO2014105222A1 (fr) * 2012-12-31 2014-07-03 North American Specialty Products Llc Tuyau à joint affleuré
US9200732B2 (en) 2012-12-31 2015-12-01 North American Specialty Products Llc Flush joint pipe
US9568120B2 (en) 2012-12-31 2017-02-14 North American Specialty Products Llc Flush joint pipe
US8910979B1 (en) 2014-03-28 2014-12-16 Sidney T. Fails Pipe repair coupling
US20220268380A1 (en) * 2019-07-24 2022-08-25 Aqseptence Group, Inc. Pipe length and related methods of pipe connection
WO2024128921A1 (fr) * 2022-12-13 2024-06-20 Torsion Tool Company As Ensemble d'accouplement
WO2024228865A1 (fr) * 2023-05-02 2024-11-07 S & B Technical Products, Inc. Système de jonction de tuyau retenu par verrouillage à cannelure pour tuyau en plastique

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Publication number Publication date
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